AZ 7701 CO meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.
Pocket type, digital displays.
Warning Carbon Monoxide Level is adjustable
Dual display CO reading and Max. reading
Backlight features working in the dark
2 points (0/500ppm) CO calibration
Detection range 0-999ppm
Accuracy of ± 20% (0-100PPM) or ± 15% (100-500PPM)
Dimensions 175 x 47 x 28mm (LxWxT)
Power 3 pcs x AAA